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JSON Formatter

Prettify, validate, and minify JSON data for easy reading and debugging.

Formatted JSON will appear here...
Valid JSON
Local Only
High Performance

The Ultimate JSON Formatter & Validator

Working with raw JSON can be a headache, especially when it's minified or deeply nested. Our JSON Formatter helps you transform ugly, unreadable blobs of data into beautifully indented, structured code. It also doubles as a JSON Validator, catching syntax errors (missing commas, quotes, etc.) in real-time.

Prettify & Minify

Choose between "Prettify" to make JSON human-readable for debugging, or "Minify" to remove all white spaces and line breaks for saving storage and improving API performance.

Key Features

  • Instantly catch JSON syntax errors with line-by-line feedback.
  • One-click copy to clipboard for quick implementation.
  • Secure 100% client-side processing (No data sent to server).
  • Dark mode support for comfortable late-night debugging.

How it works?

Simply paste your raw JSON into the input box. Our engine uses the native JSON.parse() method to validate your data. If valid, JSON.stringify(data, null, 2) is used to create the beautifully formatted output you see on the right. If invalid, the exact error thrown by the JavaScript engine is displayed for you to fix.